diff --git a/go.mod b/go.mod
index b0a9f44..4027079 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/cert-manager/webhook-example
 
-go 1.19
+go 1.20
 
 // This is needed till a we release a version of cert-manager with https://github.com/cert-manager/cert-manager/pull/5736
 // The version was generated by adding replace github.com/cert-manager/cert-manager => github.com/cert-manager/cert-manager release-1.11 and running go mod tidy
@@ -10,7 +10,6 @@ require (
 	github.com/cert-manager/cert-manager v1.11.0
 	github.com/miekg/dns v1.1.50
 	github.com/sirupsen/logrus v1.8.1
-	github.com/stretchr/testify v1.8.1
 	gorm.io/driver/sqlite v1.5.1
 	gorm.io/gorm v1.25.1
 	k8s.io/apiextensions-apiserver v0.26.0
@@ -60,7 +59,6 @@ require (
 	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
-	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/prometheus/client_golang v1.14.0 // indirect
 	github.com/prometheus/client_model v0.3.0 // indirect
 	github.com/prometheus/common v0.37.0 // indirect